CN116199956A - Environment-friendly pearl cotton packaging material - Google Patents
Environment-friendly pearl cotton packaging material Download PDFInfo
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- CN116199956A CN116199956A CN202210181823.3A CN202210181823A CN116199956A CN 116199956 A CN116199956 A CN 116199956A CN 202210181823 A CN202210181823 A CN 202210181823A CN 116199956 A CN116199956 A CN 116199956A
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 88
- 239000005022 packaging material Substances 0.000 title claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 58
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims abstract description 30
- 239000004610 Internal Lubricant Substances 0.000 claims abstract description 30
- 239000000600 sorbitol Substances 0.000 claims abstract description 30
- 239000001273 butane Substances 0.000 claims abstract description 28
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 28
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 26
- 239000003607 modifier Substances 0.000 claims abstract description 22
- WYKYCHHWIJXDAO-UHFFFAOYSA-N tert-butyl 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)C WYKYCHHWIJXDAO-UHFFFAOYSA-N 0.000 claims abstract description 21
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims abstract description 20
- -1 polypropylene Polymers 0.000 claims description 59
- 238000003756 stirring Methods 0.000 claims description 56
- 239000000203 mixture Substances 0.000 claims description 51
- 239000000839 emulsion Substances 0.000 claims description 42
- 239000004743 Polypropylene Substances 0.000 claims description 39
- 229920001155 polypropylene Polymers 0.000 claims description 39
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 36
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 239000004698 Polyethylene Substances 0.000 claims description 20
- 229920000573 polyethylene Polymers 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 20
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 18
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 17
- 239000005543 nano-size silicon particle Substances 0.000 claims description 17
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 17
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 17
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 17
- 229940080314 sodium bentonite Drugs 0.000 claims description 17
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 17
- 239000011787 zinc oxide Substances 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 14
- 210000002268 wool Anatomy 0.000 claims description 12
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 26
- 238000002360 preparation method Methods 0.000 description 10
- 230000000704 physical effect Effects 0.000 description 4
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- 239000006185 dispersion Substances 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
Abstract
The invention provides an environment-friendly pearl cotton packaging material, which comprises 65-90 parts by weight of EPE pearl cotton master batch, 7-11 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 12-15 parts by weight of sorbitol solution, 5-10 parts by weight of modifier, 5-10 parts by weight of wear-resistant agent, 1-2 parts by weight of internal lubricant, 2-8 parts by weight of butane agent and 2-5 parts by weight of monoglyceride. The invention has low cost, good appearance quality and good wear resistance, improves the degradability of the pearl cotton, avoids the pollution of the waste pearl cotton to the environment, and is more environment-friendly in the manufacturing process.
Description
Technical Field
The invention belongs to the technical field of pearl cotton production, and particularly relates to an environment-friendly pearl cotton packaging material.
Background
The polyethylene foam cotton is of a non-crosslinked closed-cell structure, also called EPE pearl cotton, and is a novel environment-friendly packaging material. It is composed of low-density polyethylene resin which is physically foamed to generate countless independent bubbles. The EPE pearl cotton has the advantages of high strength buffering and shock resistance, has a series of excellent use characteristics of heat preservation, moisture resistance, heat insulation, sound insulation, friction resistance, ageing resistance, corrosion resistance and the like, has good chemical resistance, and is an ideal substitute for the traditional packaging material. It is widely used as packaging material in the fields of high-grade furniture, household appliances, instruments and meters, artistic gifts, wood products, glass ceramics, building waterproofing, carpet interlayer, sound insulation, travelling bags, precision parts, various pipeline heat preservation, etc. It may be also used in building, electromechanical engineering and other fields.
EPE pearl wool has become a popular novel flexible packaging material in the market due to its soft texture and good shock absorption, and the process flow of the EPE pearl wool approximately comprises: plastic particles, formula mixing, heating extrusion, foaming agent injection, mixing plasticization, extrusion, cooling molding, fixed-diameter cutting, cooling traction, flattening and winding, wherein the pearl cotton manufactured by the prior art is poor in wear resistance, long in degradation time, not environment-friendly and high in cost.
In summary, the inventor provides an environment-friendly pearl cotton packaging material and a preparation method thereof, so that the wear resistance of the packaging material is greatly improved, the degradability of pearl cotton is improved, the pollution of waste pearl cotton to the environment is avoided, the environment is not polluted in the manufacturing process, and the cost is low.
Disclosure of Invention
The environment-friendly pearl cotton packaging material provided by the invention has the advantages of low cost, good appearance quality and good wear resistance, improves the degradability of pearl cotton, avoids pollution of waste pearl cotton to the environment, does not pollute the environment in the manufacturing process, and is more environment-friendly.
To achieve the above object, the specific scheme is as follows:
in a first aspect of the invention, an environment-friendly pearl cotton packaging material is provided, wherein the raw materials comprise 65-90 parts by weight of EPE pearl cotton master batch, 7-11 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 12-15 parts by weight of sorbitol solution, 5-10 parts by weight of modifier, 5-10 parts by weight of wear-resistant agent, 1-2 parts by weight of internal lubricant, 2-8 parts by weight of butane agent and 2-5 parts by weight of monoglyceride.
Further elaboration as the first aspect of the invention:
preferably, the sorbitol solution has an effective content of 70% -73% and a density of 1.489g/-1.495g/.
Preferably, the modifier consists of 50-80 parts by weight of VAE emulsion, 10-20 parts by weight of ammonium persulfate and 12-18 parts by weight of potassium persulfate.
Preferably, the vinyl acetate content of the VAE emulsion is 80% to 85%.
Preferably, the wear-resistant agent is a mixture of 2-5 parts by weight of sodium bentonite, 3-5 parts by weight of nano zinc oxide, 3-8 parts by weight of nano titanium dioxide and 2-6 parts by weight of nano silicon carbide.
Preferably, the internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 1-2:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
In a second aspect of the present invention, a method for preparing the above-mentioned environment-friendly pearl wool packaging material is provided, comprising the following steps:
a. mixing ammonium persulfate and potassium persulfate according to the weight part of claim 4 for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion according to the weight part, and stirring to obtain emulsion-type suspension for later use;
b. drying sodium bentonite, nano zinc oxide, nano titanium dioxide and nano silicon carbide which are prepared by weight part according to the method of claim 5 in an oven at 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. thoroughly mixing the polypropylene wax and the polyethylene wax according to the weight part of claim 6 for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the rotation speed of the extruder screw is adjusted to 400r/min-430r/min, the butane agent with the weight portions is pumped into the extruder main body, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by utilizing a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw rod, and mutually matching and extruding the die head part and a traction roller to prepare the environment-friendly pearl cotton packaging material foam body with uniform cell structure connection density.
Preferably, in the step a, the emulsion type suspension is prepared, the stirring speed is 80r/min-100r/min, and the stirring is carried out for 2.5h-3h.
Preferably, the time for pumping the butane agent in step f is controlled to be 30s-60s.
Preferably, the extrusion temperature of the extruder in step g is set to 150-160 ℃ and the extrusion pressure is 0.3-0.5 MPa. The invention is different from the prior art in that the invention has the following technical effects:
the environment-friendly pearl cotton packaging material comprises EPE pearl cotton master batches, tert-butyl peroxy-2-ethylhexanoate, sorbitol solution, modifier, wear-resistant agent, internal lubricant, butane agent and monoglyceride, tert-butyl peroxy-2-ethylhexanoate and sorbitol solution as initiator, can fully ensure the physical properties of the pearl cotton, enhance the strength of the pearl cotton, ensure that the sorbitol solution is not easy to ferment by various microorganisms, has good heat resistance, is beneficial to improving the degradability of the pearl cotton, is more environment-friendly, is visible according to the preparation method of the environment-friendly pearl cotton packaging material, has simple process steps, low production cost, does not pollute the environment, and is more environment-friendly.
And secondly, the modifier is prepared from the VAE emulsion, the ammonium persulfate and the potassium persulfate to form emulsion-type suspension, the VAE emulsion has permanent flexibility, and the prepared emulsion-type suspension ensures that the ammonium persulfate and the potassium persulfate are in a stable dispersion state, so that insufficient modification caused by uneven dispersion and unbalanced force among system particles is avoided, and the physical property and the degradability of the pearl cotton are further improved, and the pearl cotton is safe and environment-friendly.
Thirdly, the mixture of sodium bentonite, nano zinc oxide, nano titanium dioxide and nano silicon carbide is selected as the wear-resistant agent, and is ground by combining with a ball mill and then screened by a 200-250-mesh sieve, so that the proportion of each component is reasonable, the wear resistance of the pearl cotton is greatly improved, and the use requirement of the pearl cotton as a packaging material is met.
Fourthly, the internal lubricant of the invention adopts the mixture of the polypropylene wax and the polyethylene wax according to the ratio of 1-2:1, and the polypropylene wax is low molecular weight polypropylene wax, so that the extrusion amount can be improved, the extrusion time can be shortened, the chapping phenomenon can be eliminated, the appearance quality of the environment-friendly pearl cotton can be greatly improved, the cost is low as a whole, the appearance quality is good, the wear resistance is good, the degradability of the pearl cotton is improved, the environmental pollution caused by the abandoned pearl cotton is avoided, the manufacturing process is free from polluting the environment, and the environment is more friendly.
Detailed Description
The following will clearly and fully describe the technical aspects of the invention in connection with the embodiments of the invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the environment-friendly pearl cotton packaging material comprises 65 parts by weight of EPE pearl cotton master batch, 7 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 12 parts by weight of sorbitol solution, 5 parts by weight of modifier, 5 parts by weight of wear-resistant agent, 1 part by weight of internal lubricant, 2 parts by weight of butane agent and 2 parts by weight of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 50 parts by weight of VAE emulsion, 10 parts by weight of ammonium persulfate and 12 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 2 parts by weight of sodium bentonite, 3 parts by weight of nano zinc oxide, 3 parts by weight of nano titanium dioxide and 2 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to a ratio of 1:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 2:
the environment-friendly pearl cotton packaging material comprises 90 parts by weight of EPE pearl cotton master batch, 11 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 15 parts by weight of sorbitol solution, 10 parts by weight of modifier, 10 parts by weight of wear-resistant agent, 2 parts by weight of internal lubricant, 8 parts by weight of butane agent and 5 parts by weight of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 80 parts by weight of VAE emulsion, 20 parts by weight of ammonium persulfate and 18 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 5 parts by weight of sodium bentonite, 5 parts by weight of nano zinc oxide, 8 parts by weight of nano titanium dioxide and 6 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 1.8:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 3:
the environment-friendly pearl cotton packaging material comprises 75 parts of EPE pearl cotton master batch, 8 parts of tert-butyl peroxy-2-ethylhexanoate, 13 parts of sorbitol solution, 7 parts of modifier, 8 parts of wear-resistant agent, 1.5 parts of internal lubricant, 6 parts of butane agent and 4 parts of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 65 parts by weight of VAE emulsion, 15 parts by weight of ammonium persulfate and 14 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 3.5 parts by weight of sodium bentonite, 4 parts by weight of nano zinc oxide, 5 parts by weight of nano titanium dioxide and 5 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 1.5:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 4:
the environment-friendly pearl cotton packaging material comprises 85 parts by weight of EPE pearl cotton master batch, 5 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 14 parts by weight of sorbitol solution, 7 parts by weight of modifier, 11 parts by weight of wear-resistant agent, 1.5 parts by weight of internal lubricant, 6 parts by weight of butane agent and 4 parts by weight of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 60 parts by weight of VAE emulsion, 15 parts by weight of ammonium persulfate and 14 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 3.5 parts by weight of sodium bentonite, 4 parts by weight of nano zinc oxide, 5 parts by weight of nano titanium dioxide and 5 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to a ratio of 2:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 5:
the environment-friendly pearl cotton packaging material comprises 80 parts by weight of EPE pearl cotton master batch, 8 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 14 parts by weight of sorbitol solution, 7 parts by weight of modifier, 4.5 parts by weight of wear-resistant agent, 2 parts by weight of internal lubricant, 6 parts by weight of butane agent and 4 parts by weight of monoglyceride.
Other embodiments are similar to example 4
Example 6:
the environment-friendly pearl cotton packaging material comprises 75 parts of EPE pearl cotton master batch, 8 parts of tert-butyl peroxy-2-ethylhexanoate, 13 parts of sorbitol solution, 11 parts of modifier, 7 parts of wear-resistant agent, 2 parts of internal lubricant, 5 parts of butane agent and 4 parts of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 70 parts by weight of VAE emulsion, 15 parts by weight of ammonium persulfate and 15 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 4 parts by weight of sodium bentonite, 4 parts by weight of nano zinc oxide, 6 parts by weight of nano titanium dioxide and 5 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to a ratio of 1.4:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 7:
the environment-friendly pearl cotton packaging material comprises 88 parts by weight of EPE pearl cotton master batch, 10 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 14 parts by weight of sorbitol solution, 4 parts by weight of modifier, 7 parts by weight of wear-resistant agent, 1 part by weight of internal lubricant, 7 parts by weight of butane agent and 5 parts by weight of monoglyceride.
Other embodiments are similar to example 6
Example 8:
the environment-friendly pearl cotton packaging material comprises, by weight, 70 parts of EPE pearl cotton master batches, 8 parts of tert-butyl peroxy-2-ethylhexanoate, 13 parts of sorbitol solution, 7 parts of a modifier, 8 parts of an antiwear agent, 3 parts of an internal lubricant, 7 parts of a butane agent and 4 parts of monoglyceride.
The effective content of the sorbitol solution is 70% -73% and the density is 1.489g/cm 3 -1.495g/cm 3 。
The modifier consists of 70 parts by weight of VAE emulsion, 15 parts by weight of ammonium persulfate and 14 parts by weight of potassium persulfate.
The vinyl acetate content of the VAE emulsion is 80-85%.
The wear-resistant agent is a mixture of 4 parts by weight of sodium bentonite, 4 parts by weight of nano zinc oxide, 6 parts by weight of nano titanium dioxide and 6 parts by weight of nano silicon carbide.
The internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 1.5:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
The preparation method of the environment-friendly pearl cotton packaging material comprises the following steps:
a. mixing the ammonium persulfate and the potassium persulfate in parts by weight for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion in parts by weight, and stirring to obtain emulsion type suspension for later use, wherein the stirring speed is 80-100 r/min, and stirring is 2.5-3 h;
b. drying the sodium bentonite, the nano zinc oxide, the nano titanium dioxide and the nano silicon carbide in an oven at the temperature of 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. fully mixing the polypropylene wax and the polyethylene wax in parts by weight for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the screw rod of the extruder is rotated to 400r/min-430r/min, the butane agent with the weight portions is pumped into the main body of the extruder, the time for pumping the butane agent is controlled to be 30s-60s, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by using a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw, mutually matching and extruding the die head part and a traction roller, setting the extrusion temperature to be 150-160 ℃, and extruding the mixture at 0.3-0.5 MPa to prepare the environment-friendly pearl cotton packaging material foam with uniform cell structure connection density.
Example 9:
the internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 2.5:1, wherein the polypropylene wax is low molecular weight polypropylene wax, the molecular weight is 3500-3800, and the other steps are the same as in example 8.
Example 10:
the environment-friendly pearl cotton packaging material is prepared by adopting a conventional processing mode, and the method is otherwise the same as in example 3.
The environment-friendly pearl cotton packaging materials prepared in the above examples 1-10 and the environment-friendly pearl cotton packaging materials on the market are used as comparative examples, are respectively molded into environment-friendly pearl cotton packaging materials with the same shape and size, and are subjected to performance test by adopting a conventional test method, and the results are as follows:
based on the data from the above test results, the inventors analyzed as follows: example 1-example 9 the environment-friendly pearl cotton packaging material prepared by the formulation and the preparation method of the invention has better performance than the comparative example in terms of appearance, physical properties, degradability and the like, and the appearance, physical properties and degradability of example 10 are not much different from those of the comparative example.
Examples 1-3 fully utilize the formulation and preparation of the present invention, which is superior to the other examples in all respects, particularly as most prominent in example 3. It is obvious from experiments that the wear-resistant agents of the embodiment 4 and the embodiment 5 are added or too much or too little, and the wear-resistant performance is relatively poor; too much or too little modifier of example 6, example 7 results in relatively long degradation times; too much lubricant was added in example 8, example 9 or the ratio of polypropylene wax and polyethylene wax was not in accordance with the present invention, resulting in a slightly inferior appearance.
Compared with the prior art, the invention has the advantages of low cost, good appearance quality and good wear resistance, improves the degradability of the pearl cotton, avoids the pollution of the waste pearl cotton to the environment, and is more environment-friendly in the manufacturing process.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. An environment-friendly pearl cotton packaging material is characterized in that: the raw materials comprise 65-90 parts by weight of EPE pearl cotton master batch, 7-11 parts by weight of tert-butyl peroxy-2-ethylhexanoate, 12-15 parts by weight of sorbitol solution, 5-10 parts by weight of modifier, 5-10 parts by weight of wear-resistant agent, 1-2 parts by weight of internal lubricant, 2-8 parts by weight of butane agent and 2-5 parts by weight of monoglyceride.
2. The environment-friendly pearl wool packaging material according to claim 1, wherein: the effective content of the sorbitol solution is 70% -73%, and the density is 1.489g/-1.495g/.
3. The environment-friendly pearl wool packaging material according to claim 1, wherein: the modifier consists of 50-80 parts by weight of VAE emulsion, 10-20 parts by weight of ammonium persulfate and 12-18 parts by weight of potassium persulfate.
4. The environment-friendly pearl wool packaging material according to claim 3, wherein: the vinyl acetate content of the VAE emulsion is 80-85%.
5. The environment-friendly pearl wool packaging material according to claim 1, wherein: the wear-resistant agent is a mixture of 2-5 parts by weight of sodium bentonite, 3-5 parts by weight of nano zinc oxide, 3-8 parts by weight of nano titanium dioxide and 2-6 parts by weight of nano silicon carbide.
6. The environment-friendly pearl wool packaging material according to claim 1, wherein: the internal lubricant is a mixture of polypropylene wax and polyethylene wax according to the ratio of 1-2:1, wherein the polypropylene wax is low-molecular-weight polypropylene wax, and the molecular weight is 3500-3800.
7. A method for preparing the environment-friendly pearl wool packaging material according to claim 1, which is characterized by comprising the following steps:
a. mixing ammonium persulfate and potassium persulfate according to the weight part of claim 4 for 5-10 min under the action of ultrasonic waves to obtain a powdery mixture, adding the powdery mixture into the VAE emulsion according to the weight part, and stirring to obtain emulsion-type suspension for later use;
b. drying sodium bentonite, nano zinc oxide, nano titanium dioxide and nano silicon carbide which are prepared by weight part according to the method of claim 5 in an oven at 95-105 ℃ for 1-2 h, grinding by a ball mill, and sieving by a 200-250 mesh sieve for later use;
c. thoroughly mixing the polypropylene wax and the polyethylene wax according to the weight part of claim 6 for standby;
d. adding the EPE pearl cotton master batch with the weight parts into an extruder main body, regulating the rotation speed of an extruder screw to 50r/min-80r/min, regulating the heating temperature to 170-180 ℃ after the EPE pearl cotton master batch is fully melted, adding the tert-butyl peroxy-2-ethylhexanoate and sorbitol solution with the weight parts, regulating the rotation speed of the extruder screw to 120r/min-140r/min, stirring for 10min-15min, keeping the heating temperature unchanged, adding the emulsion type suspension prepared in the step a into the extruder main body, stirring for 10min-15min, and then adding the wear-resisting agent prepared in the step b and the internal lubricant prepared in the step c, and fully stirring for 20min-25min;
e. the screw speed of the extruder is unchanged, the heating temperature is adjusted to 220 ℃ to 230 ℃, and the monoglyceride with the weight part is added into the main body of the extruder;
f. heating temperature is kept unchanged, the rotation speed of the extruder screw is adjusted to 400r/min-430r/min, the butane agent with the weight portions is pumped into the extruder main body, and stirring is carried out for 10min-15min;
g. gradually cooling the extruder main body by utilizing a cooling system of the extruder, pushing the melted mixture forward to a die head part by a screw rod, and mutually matching and extruding the die head part and a traction roller to prepare the environment-friendly pearl cotton packaging material foam body with uniform cell structure connection density.
8. The method for preparing the environment-friendly pearl wool packaging material according to claim 7, which is characterized in that: and (c) when the emulsion type suspension is prepared in the step a, stirring speed is 80r/min-100r/min, and stirring is carried out for 2.5h-3h.
9. The method for preparing the environment-friendly pearl wool packaging material according to claim 7, which is characterized in that: and f, controlling the time for pumping the butane agent in the step between 30s and 60s.
10. The method for preparing the environment-friendly pearl wool packaging material according to claim 7, which is characterized in that: setting the extrusion temperature of the extruder in the step g to be 150-160 ℃ and the extrusion pressure to be 0.3-0.5 MPa. .
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| CN113071172A (en) * | 2021-03-24 | 2021-07-06 | 力斯特(无锡)包装科技有限公司 | High-strength degradable EPE heat-insulation pearl wool board and processing method |
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| CN107629284A (en) * | 2017-08-24 | 2018-01-26 | 南通通联海绵塑料有限公司 | A kind of preparation method of antistatic foaming EPE pearl wool |
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